US4772197A - Extrusion die for making flat products - Google Patents

Extrusion die for making flat products Download PDF

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Publication number
US4772197A
US4772197A US07/025,509 US2550987A US4772197A US 4772197 A US4772197 A US 4772197A US 2550987 A US2550987 A US 2550987A US 4772197 A US4772197 A US 4772197A
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United States
Prior art keywords
chamber
section
extrusion
extrusion die
counter
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US07/025,509
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English (en)
Inventor
Ernst Heck
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Nestec SA
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Nestec SA
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Filing date
Publication date
Application filed by Nestec SA filed Critical Nestec SA
Assigned to NESTEC S.A., AVENUE NESTLE 55, VEVEY, SWITZERLAND, A CORP. OF SWISS reassignment NESTEC S.A., AVENUE NESTLE 55, VEVEY, SWITZERLAND, A CORP. OF SWISS ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: HECK, ERNST
Application granted granted Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/221—Extrusion presses; Dies therefor extrusion dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/255—Flow control means, e.g. valves
    • B29C48/2556—Flow control means, e.g. valves provided in or in the proximity of dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/256—Exchangeable extruder parts
    • B29C48/2566—Die parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/345—Extrusion nozzles comprising two or more adjacently arranged ports, for simultaneously extruding multiple strands, e.g. for pelletising
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/695—Flow dividers, e.g. breaker plates

Definitions

  • This invention relates to an extrusion die for making flat products having an equally smooth surface on either side and regular edges.
  • CH-PS No. 624 604 relates to an extrusion die comprising upstream of the extrusion nozzle a grid arranged in an intermediate position in the front chamber between the tip of the screw of the extruder and the pressure equalization chamber.
  • This die can only be used with an extruder comprising two co-rotating screws.
  • the wear of the head of the screw of the extruder leads to an irregular product on account of the play which exists between the screw head and the counter-pressure grid.
  • the product obtained it is not equally smooth on either side and has a tendency towards arching and towards deformation on account of inner tensions.
  • the extrusion die according to the present invention may be used with any screws and screw heads both with a single screw and with a cylindrical or conical co-rotating or contra-rotating twin screw and the wear of the screw heads has no influence on the system because they are separated from the extrusion die itself.
  • the product obtained with the extrusion die according to the present invention is smooth on either side with straight, regular edges, shows no tendency towards arching and is homogeneous throughout.
  • a portion defining a chamber for recombining the strands issuing from the distribution plate having a substantially frustopyramidal profile and a cross-section tapering from said substantially rectangular cross-section to the cross-section of an extrusion slot,
  • the object of the present invention is to provide an extrusion die in which the dough is transported at the same rate in a plane perpendicular to the axis of the central bore. This object is substantially achieved in the distribution chamber which makes it possible to obtain an end product having the characteristics mentioned above, namely a flat product which is smooth on either side, has regular edges and is free from inner tensions.
  • the mode of operation of the extrusion die according to the invention will be explained in more detail hereinafter with reference to the accompanying drawings.
  • the distribution chamber, the counter-pressure plate and the extrusion slot have a substantially rectangular cross-section of which the small sides terminate in a concave form, for example semi-circular, semi-elliptical, semi-oval, tapered or any other similar form.
  • This rectangular cross-section thus enables the dough to be brought into an elongate form approaching its final form.
  • the length of the rectangle is between 1 and 10 times its width.
  • the length of the rectangle is between 10 and 50 times its width. It is also possible to use an extrusion slot of wave-form cross-section.
  • the expansion control slot is preferably made of a material having good sliding properties, for example polytetrafluoroethylene (PTFE) or a composite of PTFE with a material which imparts high rigidity.
  • the other parts of the extrusion die are made of stainless steel or iron. There are no welded parts so that all the components may be rapidly interchanged as required.
  • the extrusion die according to the invention comprises from 2 to 8 distribution bores and, of course, the corresponding number of elements associated therewith, namely the distribution chamber, the counter-pressure plate, the recombining chamber, the extrusion slot and the expansion control slot.
  • the die preferably comprises from 2 to 4 distribution bores. This number depends on the dimensions of the product to be prepared and of the extrusion slot.
  • the main point is always to have a symmetrical distribution in relation to the axis of the central bore.
  • the distribution chambers are equidistant from the axis of the central bore and the distribution bores form between them an angle of 360°/n, n being the number of bores. If there are 2, 3 or 4 bores, the angles are, respectively, 180°, 120° and 90°.
  • the counter-pressure plate may comprise from 5 to 40 uniformly distributed bores. Depending on the number of these bores, the end product will have a lighter or heavier texture.
  • the diameter of these bores is generally from 1 to 5 mm.
  • a calibrating attachment known per se has to be provided at the exit of the expansion control slot for properly forming the four edges of the flat product.
  • This calibrating attachment is not difficult to accommodate, i.e., there is no lack of space, because the extrusion slots are sufficiently far apart from another.
  • the extruder with its extrusion die is of course integrated in a production line comprising at its exit: a conveyor belt for packing the flat product, a station for toasting the flat product according to the moisture content, the colour, the texture and the appearance of the desired end product and cutters for cutting the flat product to the required size.
  • FIG. 1 is a longitudinal section through an extrusion die according to the invention comprising four distribution bores.
  • FIG. 2 is a section on the line 2--2 of FIG. 1.
  • the dough arrives through the central bore (2) and is uniformly distributed by the bores (6) to the distribution chambers (7) which, as illustrated, have a longitudinal cross-section axis parallel with the longitudinal cross-section axis of the central bore. It already has substantially the same rate of entry into the counter-pressure plate (8) at all points of a plane perpendicular to the axis of the central bore (2) which makes it possible to form several individual strands of specific configuration taking into account the end product to be prepared.
  • the product is preformed.
  • the pressure and temperature of the dough arriving in this plate may already be considered as uniform.
  • the individual strands of dough are then pre-expanded and homogeneously blended in the recombining chamber (10).
  • the dough acquires a light or dense structure according to the choice of the counter-pressure plate. It is compressed in the direction of the extrusion slot in which the friction on the surface of the product is extremely uniform, leading to an end product of high surface quality.
  • the product arrives in the expansion control slot where it is post-expanded and assumes its definitive form.
  • the flat product is now ready and continues to advance in the form of a continuous strip along the rest of the production line.
  • the extrusion die according to the invention is extremely flexible because its various components may be rapidly dismantled and replaced by others, depending on the desired end product.
  • the extrusion die according to the invention it is possible to make a flat product of high quality for the consumer, for example a flat bread.
  • Another interesting advantage of the extrusion die according to the invention is that it provides for rapid adaptation to the desired productivity level. Thus, if an extrusion die comprising four extrusion slots is being used and if it is desired to reduce output by half, the two opposite extrusion slots are closed. When it is desired to return to full capacity, the two extrusion slots are re-opened.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Confectionery (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)
  • Extrusion Of Metal (AREA)
  • Nonwoven Fabrics (AREA)
US07/025,509 1986-04-08 1987-03-13 Extrusion die for making flat products Expired - Fee Related US4772197A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1364/86A CH667236A5 (fr) 1986-04-08 1986-04-08 Filiere d'extrusion pour faire des produits plats.
CH1364/86 1986-04-08

Publications (1)

Publication Number Publication Date
US4772197A true US4772197A (en) 1988-09-20

Family

ID=4208700

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/025,509 Expired - Fee Related US4772197A (en) 1986-04-08 1987-03-13 Extrusion die for making flat products

Country Status (9)

Country Link
US (1) US4772197A (ja)
EP (1) EP0240699B1 (ja)
JP (1) JPS62239975A (ja)
AT (1) ATE55320T1 (ja)
CA (1) CA1265764A (ja)
CH (1) CH667236A5 (ja)
DE (1) DE3764139D1 (ja)
ES (1) ES2016581B3 (ja)
MY (1) MY101064A (ja)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5110276A (en) * 1989-12-28 1992-05-05 Farnsworth John T Extrusion die assembly
US5486049A (en) * 1994-01-28 1996-01-23 Nestec S.A. Apparati for mixing fluid substances
US5776534A (en) * 1996-04-03 1998-07-07 General Mills, Inc. Food apparatus for forming multiple colored extrudates and method of preparation
US5919509A (en) * 1997-05-01 1999-07-06 General Mills, Inc. Method and apparatus for producing multiple food extrudates
US5928523A (en) * 1995-09-18 1999-07-27 Barmag Ag Method and apparatus for continuously filtering a polymeric melt utilizing an intermediate filter of reduced surface area during filter cleaning or replacement
US6592353B1 (en) * 1999-01-25 2003-07-15 Meiji Seika Kaisha, Ltd. Dough distribution device of extruder
CN110944759A (zh) * 2017-05-24 2020-03-31 伊利诺斯工具制品有限公司 用于流体涂覆装置的快速转换式槽-模具式组件

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010010832A (ko) * 1999-07-23 2001-02-15 신장식 비닐에어버블 씨트장치의 비닐성형다이
JP2009153508A (ja) * 2007-12-28 2009-07-16 Kao Corp 発泡成形食品製造用ダイス
US20150208717A1 (en) * 2012-08-22 2015-07-30 Nisshin Foods Inc. Extrusion noodle-making machine and extruded noodle sheet
FR3034702B1 (fr) * 2015-04-13 2017-10-20 Clextral Filiere d'extrusion, ainsi que machine d'extrusion comportant une telle filiere
ITUB20161171A1 (it) * 2016-02-29 2017-08-29 Flon Project S R L Un dispositivo modellatore per ottenere un nastro o semilavorati di PTFE bi-orientato.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3191228A (en) * 1961-03-23 1965-06-29 Schluter Werner Apparatus for making thermoplastic tiles with color effects
BE768574A (fr) * 1970-07-27 1971-11-03 Glanzstoff Ag Tete de filage
US3664779A (en) * 1969-04-01 1972-05-23 Beatrice Foods Co Apparatus for producing shapes with controlled three dimensions
US3687589A (en) * 1970-07-20 1972-08-29 Dow Chemical Co Apparatus for the controlled extrusion of multi-component synthetic resinous bodies
SU397357A1 (ru) * 1971-05-12 1973-09-17 Плоскощелевая головка к экструдеру
US4015926A (en) * 1976-01-20 1977-04-05 The B. F. Goodrich Company Multiple strand die head
US4217083A (en) * 1977-03-16 1980-08-12 Diepal Corporation Extrusion head

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR537698A (fr) * 1921-06-30 1922-05-27 Mecanique Meridionale Anciens Moule circulaire pour pâtes coupées
US2842072A (en) * 1956-03-21 1958-07-08 George O Graves Food processing machine
US3196486A (en) * 1962-04-16 1965-07-27 Union Carbide Corp Auger extrusion for furnace electrodes
FR2461573A1 (fr) * 1979-07-20 1981-02-06 Diepal Nez d'extrudeuse destine a equiper une chaine de fabrication de produits en bande par le procede cuisson-extrusion-expansion

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3191228A (en) * 1961-03-23 1965-06-29 Schluter Werner Apparatus for making thermoplastic tiles with color effects
US3664779A (en) * 1969-04-01 1972-05-23 Beatrice Foods Co Apparatus for producing shapes with controlled three dimensions
US3687589A (en) * 1970-07-20 1972-08-29 Dow Chemical Co Apparatus for the controlled extrusion of multi-component synthetic resinous bodies
BE768574A (fr) * 1970-07-27 1971-11-03 Glanzstoff Ag Tete de filage
SU397357A1 (ru) * 1971-05-12 1973-09-17 Плоскощелевая головка к экструдеру
US4015926A (en) * 1976-01-20 1977-04-05 The B. F. Goodrich Company Multiple strand die head
US4217083A (en) * 1977-03-16 1980-08-12 Diepal Corporation Extrusion head

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5110276A (en) * 1989-12-28 1992-05-05 Farnsworth John T Extrusion die assembly
US5486049A (en) * 1994-01-28 1996-01-23 Nestec S.A. Apparati for mixing fluid substances
US5538748A (en) * 1994-01-28 1996-07-23 Nestec S.A. Process for mixing fluid materials
US5928523A (en) * 1995-09-18 1999-07-27 Barmag Ag Method and apparatus for continuously filtering a polymeric melt utilizing an intermediate filter of reduced surface area during filter cleaning or replacement
US5958255A (en) * 1995-09-18 1999-09-28 Barmag Ag Method and apparatus for filtering a polymeric melt
US5776534A (en) * 1996-04-03 1998-07-07 General Mills, Inc. Food apparatus for forming multiple colored extrudates and method of preparation
US5919509A (en) * 1997-05-01 1999-07-06 General Mills, Inc. Method and apparatus for producing multiple food extrudates
US6592353B1 (en) * 1999-01-25 2003-07-15 Meiji Seika Kaisha, Ltd. Dough distribution device of extruder
CN110944759A (zh) * 2017-05-24 2020-03-31 伊利诺斯工具制品有限公司 用于流体涂覆装置的快速转换式槽-模具式组件
CN110944759B (zh) * 2017-05-24 2021-12-10 伊利诺斯工具制品有限公司 用于流体涂覆装置的快速转换式槽-模具式组件

Also Published As

Publication number Publication date
MY101064A (en) 1991-07-16
EP0240699A1 (fr) 1987-10-14
JPH04628B2 (ja) 1992-01-08
EP0240699B1 (fr) 1990-08-08
CH667236A5 (fr) 1988-09-30
ES2016581B3 (es) 1990-11-16
CA1265764A (en) 1990-02-13
DE3764139D1 (de) 1990-09-13
JPS62239975A (ja) 1987-10-20
ATE55320T1 (de) 1990-08-15

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Owner name: NESTEC S.A., AVENUE NESTLE 55, VEVEY, SWITZERLAND,

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